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What was the initial amount of gasoline ...

What was the initial amount of gasoline in a fuel trailer, in gallons, it there are now x galons, y gallons were pumped into a storage tank, and then 50 gallons were added to the trailer?

A

`x+y+50`

B

`x+y-50`

C

`y-x+50`

D

`x-y-50`

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • There are k gallons of gasoline available to fill a tank. After d gallons have been pumped in terms of k and d, what percent of the gasoline has been pumped?

    A
    `(100d)/(k)%`
    B
    `(k)/(100d)%`
    C
    `(100k)/(d)%`
    D
    `(100(k-d))/(k)%`

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    A
    `25`
    B
    `75`
    C
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  • A certain type of account must be opened with an investment for a positive integer number of years. No other deposits or withdrwals are permitted, and the account earns 7 percent intest that is compounded annually. If $400 were invested in the account for x years, what is the smallest possible value of x such that at the end of x years, the amount in the account will be least 3 times initial investment ?

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